Elevator.



, e. HILLMAN.

ELEVATOR,

APPLICATION FILED DEC. 22. 1909.

ULQ.

Patented Dec.3,1912.

6 SHEETSSHEET 1.

H. G.HILLMAN.

ELEVATOR.

' nrmon mn FILED-D3012, 1909.

Patented. Dec. 3, 1912.

H. G. HILLMANQ ELEVATOR. APPLICATION FILED DBO. 22. 1909.

"Patented 1)ec.3,1912.v

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= msrnmllamimlc H. G. HILLMAN.

ELEVATOR.

APPLICATION FILED DEC. 22. 1909.

fratented De0.3,1912.

I Q vi-tmwoeoz 3 mm: mus. Inc" mm. vlummm. u c.

H. G. HI LLMAN.

ELEVATOR. APPLICATION 11.21) DEC. 22, 1909.

Patented Dec. 3, 1912.

51 9i 1211 cases:

mrzmunmunulmnc Hunter a. HILLMAN, or MORRIS PARK, NEW roRm AssreNon r0JOHN on NEW YORK, N..Y..

sra'rns' Parana orrrcn;

r. CLARKE,

ELEVATdR.

Specification of Letters Patent.

Application filed December 22, 1909. Serial No. 534,425.

To all whwn'. 2''. may concern..-

Be it known that I, I'IENRY G. HILL'MAN, a citizen of the United States,and a resident of Morris Park, Queens county, Island, State of NewYork,'have invented new and useful Improvements in Elevators, of whichthe following is a specification.

My invention relates to elevators and more particularly to automaticsafety appliances therefor. I

One of the objects of my invention is to provide neahs-whereby theelevator car cannot move away fromany landing due to the careless oraccidental operation of the operators cont-roller as long as the door atthat landing remains open, and whereby in the case of a hydraulicelevator should the car start from a landing due to leakage while thecontrolleris atits off or neutral position the car will be automaticallyreturned to the landing and will be prevented from moving but a shortdistance therefrom before such, return movement.

' Another object of my invention is to, provide means for automaticallylatching the door at any landing and for holding the door latched untilthe car arrives in its proper position at the landing and the"controller handle moved to the oif or neutral position, said meansincluding a novel arrangement of circuits for controlling the.

latches.'

My invention is especially useful in cases where the operator isfrequently obliged to leave his car, as where a watchman inspecting abuilding leaves his car standing at each landing while he makes hisrounds,

during'which time the car either due to. 801116 movement of thecontroller handle or due to leakage may move away from the landing. Insuch cases with my invention it is impossible for the car to leavethembeing equipped, with one feature of my invention. Fig. 2 is amodification of the same showing additional features of the inventionused in connection therewith. Fig.

- 3 shows one arrangement for applying my Long a plan view looking upfrom beneaththe car;

of a modification of the apparatusshownin Fig. 4:. Flg. 9 is a sectionalviewof the same taken on line X X. Fig. 10 is a View of the same takenon line Z Z. Figs. 11, 12,-.

ratenteaneae, 1912.

13 and 14 are details of parts of the apparatus shown inFig. 2, and Fig.15 shows one modification of a door latch.

Referring to the drawings, Fig. 1; 1,2, 3 and 4: are landings in thepath of travel of the car each of which is provided with'a door 5 whichcontrols a contact 6 which .is held-open, when its door is closed but ispermitted to be closed as soon as its door is opened. The contacts 6 areplaced in multlple across a source of'power 7, the circuits from thecontacts being as follows: from battery 7 through wire 8 through thecross wires and respective contacts in multiple to wire 9, thencethrough" wire 10, cutout 11, located in the car at landing 2, automaticsafety appliance l2 and wire 13 back to the battery. As hereinafterexplained, the automatic safety device 12 will be energized whenever.any of the contacts 6 are closed, the energization of which willprevent the car from leaving the vicinity of the landing.

.In Fig. 2 the automatic safety appliance is shown as located at the topof the elevator well and each 'of the doors 5 is shown as equipped withan automatic latch let in ad- 'dition to tl'le'contacts 6 which latchcan only be operated by the energizat-ion of a magnet 15 which isenergized'when the car reaches its proper-position at the landing, Thecircuit shown in Fig. 2 for controlling the automatic safety applianceis as follows: from battery 7 through theactuating nzagnet ofthe'safetyappliance 12, Wire 8, through the contacts 6v at each landingin multiple to wire 9- thence through wire .10, cut-out 11 in the car atlanding 2 and wire 13 back to the battery.-- The circuit-controlling-thedoor latches may be tracedas follows; .ff-ombattery 7, through wire 18',contact19 controlled by the automatic :safety. appliance,-

wire 20, movable contact 21*and stationary contact 16 at landing 2,through magnet 15 to a movable contact and stationary contact 1T- thencethrough wire-'23 and wire 13 back to the battery.

.-It will be seen from the above traced circuits that'the automaticsafety appliance-for preventing the car from moving away from thelandingwillbe energized when anyof the contacts 6 are closed by 'theopening of a. door atanylanding, and also that none of the doors can beopened except by the energization of its magnet 15 dueto the contacts21, carried by the car registering with the stationary contacts l6, l7at each landing. As hereinafter explained, partof the automaticsafetyappliance is movable with the .controller handle and the contact19 'in the circuit ofthe door latch magnets is so arranged upon thismovable part that said circuit cannot be closed unless the controller isin its off or neutral position.

In Fig. 3 I ha ve'shown one arrangemen of connecting the automaticsafety applianc'e Withthe controller handle. The automatic safetyappliance is shown in this modification as mounted at the top of theelevator well and as being. geared to a part of the motive mechanism 35by means of gears '36, while. the movable part of said safety applianceis connected by suitable cables 33, 34 to a rock arm 30 secured,- asshown, at the bottom ofthe well and upon which is mounted two'sheaves31, 32, over whichpass cables 28, 29--connected at one end to the carand at their' 'other ends to the controller handle 26 by means of thebar 27. By this arrangement of the cables, whenever the part 24 of theautomatic safety appliance is moved it will cause thearm 30 to rock fromits horizontal position thus throwing the controller handle-in oneposition or the other according to the direction of movement of the part24;. t

' The construction of one form 'of the automaticsa ty appliance is shownin Figs. 4-, 6 and 7 in which 37 is a frame mounted atthe top of theelevator well on which is journaled a threaded shaft which is geared toa suitable part of the motive mechanism 35 sheaves 41 41 overwhichflpass the cables 33,. 3dwhich are connected to the movable ithreads 46 upon the shaft 38.

part Q-lof the safety appliance, which, part is. varranged to slidelongitudinally upon 5 Upon the movable cross rods 42 and. 43' part 24:is mountedafhreaded member 1L5 in. the form. ofajhalf nut for engagingthe The threaded member dais -arranged to be moved back and forth;toward and away from. the threaded shaft by means of a toggle 53,

which is pivoted at -17 to the frame 2-12. and

at 48 to the threaded half nut 45. The rod 49.

as shown in Fig. 6, provided with a spring 52 which normally holds thehalf nut 45 away from the threaded shaft. This toggle movable member 2ito thrown the toggle for causing the engagement of said threaded memberswhen the magnet- 50 is energized clue to the opening of any one of thedoors.

iHounted upon the frame 3? are contacts 51 which are arranged to beengaged by the contact 19.carried by movable member it only when thecontroller is in its off or neutral position, which contacts ashereinafter mentioned are included in the circuit tothe 'door latchmagnets 15 so that no door can be unlatched except when the controllerhandle is at the oif position and the car in its proper position at thelanding. I

\Vith the apparatus thus far described and shown in Figs. l, 5, (3 and T.assuining thatfthe car is at landing '2, as shown 'in Fig. 2, with thedoor open. magnet 50 will be energized through the circuit previouslytraced to throw the toggle 5 3 against the force of spring 52 causingtire ei'igagementof the threaded members and 45 thus locking the movablemember and the centroller handle connected thereto with the threadedshaft 38 so that it will be impossible to move the controller handlefrom its off or neutral position. are in the position shown in Fig.3,the car should start ofi' due to leakage of its valves, the threadedmember 38 will be driven from the motive power mechanism towhich t isgeared, in a direction to cause the nnJvable member 24 and the rest ofthe controller mechanism connected thereto to be moved in a direction toreturn the car to the landing. and should the leakage keep up the coirtrcller ha 'lle will be automaticallymoved back and iorth, thus keepingthe car in the vicinity of the landing.

'hile I have shown the automatic safety appliance with the form ofinvention tilllS far described. as located at the top of the elevatorwell and .as being driven from a part of the motive power by means of achain and sprocket wheels, it obvious that the automatic safetyappliance may be located at any suitable point andmay be operated'in anymanner desired froni'any suitable part of the motive mechanism.

In Figs. 8. 9 and 10 I have shown the automatic safety appliance assecured'beiieath the floor of the car and-dilferingin some respects fromthe construction previously shown and described. M'ountedba vneath thefloor of the car C is a shaft 38'- I having threads 46, and upon thisshaft is: secured a grooved wheel 54.; Beneath' the floor and adjacentto the shaft 38 is also mounted a stub-shaft 55, mounted foramovementtoward and away from shaft 38'and lf whilcthe parts and is held. withsufiicient pressure upon a stationarycable 59 to cause the rotation ofwheelo twhen the car is in 1notion. A

track-way "60 is secured'beneath the floor 'of' f the car upon which isarranged a member 61.

preferably having'a dove-tailed connection with the trackway and havinga groove on} its lower'side in which moves a dovetailed projection fromthe-movable part- 21 of :the controller mechanism. A half-nut 45'. ,issecured'to the movable member 21 and is provided with, threads forengaging the threads 46' 'o'n the Sht1fl3'38'; The grooved member 61carrying the'movable member 24! andhalf-nut 45 is arranged to be movedback and forth toward and awayfronrthethreads'on S ae 3s bv'meanfs of'a'toggl-c operatedfthrough-"rod 49. by means of a magnet .'50'-'which'isxcontrolled as heretoi {fore explainedin connection with thepreyiouslydescribedapparatus. The toggle in this case-as in zthe formeris held broken by means of .a' spring 52', and the toggle iss'traightened whenever-z one of the doors are -opened and the magnet '50energized, for

the purposeofcausing-the engagement of the threaded members," asheretofore ex-'- pl ained.. The-part 2 'c-arrying-the' halfr ut 45 fi'sarranged to travel back and forth in the groove of member 61 "wheneverthe halfjnut-lengages' the threads 46': and; the controller handle 26'is operated from this 5 movable me'mberQ-l' through the rock shaft 62',crank 63 and'rod 64-pivoted to the movable. member 2st at 65. Itwill'be'observed that with this construction of the automatic safety"appliance the toggle v moves the members are in engagement; whereas inthe form shown in Figs. 4, 5. '6 and T. the tog gle operate-s directlyupon the half-nut 45. the .toggle andmagnet being mounted directlyuponthe member 24' and movable "therewith, when the threaded members are iFigs. 13 and 14: are enlarged views of the stationary contacts 16, .17mounted at a suitbroughtinto engagement.

is standing at the landing with a door open magnet 50 is energized thusstraightening theto-ggle'and causing engagement of the threaded membersfor locking the controller handle 26? against movement. Should the carstart away from the landing the to;

leakage in the valves, the shaft-3S will be rotating in a d rection tomox e-member 24 .soas to throw the controller in .a dircctirn .t oreturn'the car te t-helanding as previously described in connection withthe formshown .f in ltrwill be understoodithat 1n this form as in the-form's'h'own in Fig; l, 'the threaded shaft will be Put. into motionsince shaft 38" isdriven by the relative mo- "tion of the car withrespect to stationary cable 59.

ously described so that it would be impossible to energize any of themagnets for the .tion, in- ,which*position. the contacts, 51 engage thecontact 19. v e -,By arranging-the conductors' lil-and 20 for"energizing-the door latch magnets 15, with the cables leading to thecar, I do, away .with the necessity of having to run these conductorsalong the elevator well or other part of the building. This arrangementadds greatly to the economy bothof installing and. maintaining suchapparatus as compared .with' the old manner of wiring these "conductorsto the wall of the elevator well and having a contact piece carried. bythe car to close the circuit when the car reaches plied to the car, asforlighting purposes it is only necessary for'the purpose of operthelighting or other cables to the movable '2, the conductor 13 is carriedtot'hecar for the purpose of controlling the-other safety ditionalconductor 20, and even in cases where it is necessary to-r'un twoseparate conductors'to the car for the purpose of ,en

be secured to the cable leading 'to the car quired in wiring them to thewall of the well, and when arranged in the form of a cable passingto thecar they are much more accessible for the purpose of repairs than whenthey are secured to the wall of the elevator well.

able point near the landing and in the path of travel'of the car so thatthey may be en- 1 g" ga'ged-hy theinovable contacts 21, 22 mounted at asuitable point on the car. The stationarycontacts are'mounted insuch aposition that they will only be engaged by the movable contacts when thecar isin its proper position at the landing.

In Fig. 15 the door latch 14 and operating magnet 15 are shown asmounted on a plate 67 which may be secured at any suitable lpoint nearthe'door. The latch in this case Figs. 11 and1 2. show enlarged yiewsofthereto. The circuit to thedoor latch mag nets'passes through thesecontacts as previpurpose of u nlatchin g a door unless the con-'troller. handle is atits oflf-or neutral posi a landing. When current.is alreadysup ating the door latch magnets-to tap otf from contacts 21.and where. as shown in Fig.

l a pliance, it is only'necessary to add one ad- "ergizing thedoor latchmagnets, they can with much less expense than would bere-' as soon asthelca'r starts fromthe landing; 10

is shown as engaging a projection 68 carried,

by the door 5.

It will be seen from the above description of my invention that I haveprovided means for returning the car to the landing should itimproperlt' move away from the same. which means is so arranged as to becontrolled or driven from the car-power mechanism soas to movesimultaneousl v and in unison 3w ith the car and at a speedproportionate to the travel of the car, which arrangement provides asimple, gradual. positive and accurate control of the car for returningit to the landing'and for ltee 'iing it in the vicinity of the landingduring the leakage of the car valves. While I have shown and describedwithparticularitv the apparatus which seems at present to be the bestembodiment of my invention. due to its Having thus described mv inention what.

I claim and desire to secure l Lette1's'Iatentof the Lmted States g 1.The combination of .an elevator car.

power mechanism therefor, a door. an operi ators controller forgoverning the'application of power to said car. and means in ludmg amember connected to the controller andv 'a threaded. shaftcoi'rperat'ing therewith and.

mechanically driven by the movements of the car for moving thecontroller in opposite directions determined by the travel ofthecar Iand controlled by the door and rendered effective whenever the same isopen for preventing the operation of the controller bv the operator.

The combination of an elevator car. power mechanism therefor, a landingand a door at said landing, a circuit controlled by said door,-anoperators.controller to'r governing the application of power to said"car, means lncluding a threaded shaft cooperating With the controllermechanism for governing the controller-and driven at a .tspeedproportlonal to thespeed of the car,

and means controlled through said circuit and operated in'response tothe opening of thedoor .for effecting the movement of the controller bysaid. first means-when the car is moved and in a direction to return thecar I to the landin The combination of an elevator car, power mechanism.therefor,'a 1and1ng and a door at said landing, a circuit controlledthereby, an operators controller for governthe application of power tosaid gear,

I a means including a threaded shaft for mot/- ing the controller in adirection determined by the direction of travel of the car and at nltlkti. prop i'i'iqnal to the speed oi th cal and operated whenever thecar is traveling, means including a half nut for connecting said contrtller and threaded shaft. and means operated through said cult andcontrolled by the door for causing said controller operating andconnecting 1t('l':l to lnove the controller in a direction to return thecar to the landing whenever i'l away with the door open.

4. The combination of an eleva or car. power mcchanisn'i therefor. alanding and a door at said landing, a circuit controlled by move! said.door an operators controller for ern'ing the application of power tosaid means including a threaded 's-hait't' for diii atiug the controllerwhen the dooris open and the car in motion and operated simultaneouslywith the car as it starts from the landin and in a direction determinedbv the direction ot'travel of the C211.E1ll(l incanscoin trolledthrougli said circuit "when the door iopen and the car in motion forcausing -aid controller actuating means: toinove the troller in adirection to return the car to th landing. v

I The combination of an elevator cur ptnrcr int-clnuiisni therefor. alanding and a door at said landin a circuit controlledbvsaid door, anopcratofs controller mechanism for governil'ig the appl' 'a'tit-n ofpower to the car. a threaded '-.'l1:lii fipcl'ntctl:llllfii taneoaslwith the car as it starts. from the landing and at a r 1)t.(,(l ln'o'iortional tnthe speed of the car, a clutch member comiect'ed to thecontroller nirchunisn! for en aging said threaded shal'tfandhat-[rdmagnetic means carried by the controller mechanism and comrolledby said door and operated through said circuit when the door is openedfor connecting the clutch member with the threaded shaft forprcvei'iting movement of the controller mechanism by the operator.

, 3. The combination of an elevator car. power mechanism moving the car.controller nit chanism for governing the ai'iplication of power to thecar. a landing and a circuit controller fronrsaid landing, meansincluding a threaiiled shaft, and also a half nut carried by thecontrollcimechanism for operating said controller mechanism, said shaftbeing mechanically tlriven in. response to moveniento'f some partofeiidjpovver mechanism and in a direction determinedby the di'rcc tionof travel of the car,"and name-m ne'tic 'meius controlled through} saidcircuit-- t'romthe landing to cz'rus e said controller operating meanswhen the door is open and the car in motion, to move the controller in a(li IQCiZlOIIlO return the car to the land ng.

'7. The combination of an elevator car,

-power mechanism therefor, an e e for-connecting thecontroller mechanismto controller mechanisir. a clutch, comprising-a1 rotatable?tlufeade'd-'f member driven from" some pa rt 16f s'ai' power- Iechanemto -rotate in adirectio: tion of travel or the} can-and a "second memberconnected to the. cont-roller[mechanism and arranged to (engage. thethreads of 'said rotatable-member. and; electroma neticallv operatedmeansfor moving sa d second member.- into engagement with said threadssaid-:threa'ded member;

8'. '1 'h'e combination 'of' an elevator car,-,.

power' mechanism therefor. an operators ;'con-trol'l1*, a jtln 'eaded-member driven from sa dpower inec Y hanisnna carriage connected.to'the-coutr oller and movable longitudinally, of"the-.threaded"member,a half nut'movably :mountedori. the carriage and having threads forengaging the threaded member. and elect-romagneticall v controlled"means also mounted on the. carriage fol-throwing the half nut intoengagement with the threaded member to cause the carriageand-controller;

to be moved thereby. I 9. The combination of an elevator car,

power mechanism therefor; an operator's controller mechanism,-- athreaded member mechan cally connected to and driven from some part ofsaid power mechanism and operated simultaneously'wlththe car whenrotatable thread-ed. member driven from some'part of said powermechanism to rotatein a direction determined by. the directionof travelof the car, and a second member connected. to the controller mechani mand. arranged to engage the threads of said rotatable member, atogglefor moving said sec-, ond member into engagement -with said."threads, and means for operating said toggle for connecting thecontroller mechanism with said'threaded member.

"llQThe combination of an elevator car.- power mechanism therefor. anoperator's controlleixa clutch .comp1'is ing a rotatable threaded memberdrivenbv the travel of the car and in a direction'determined by thedi'-' rection of travel "of the car, and a second clutch memberconnected with said con-- troller and movable therewith relative to thethreaded member, a toggle ,-and a magnet for operating the same movablewith said second clutch member for causing thetengagement determi ed bythe direc era-tore: controller, a plural tyof; landings circuit} havingcontacts. oontrolledby each of -'-sai-d doorsra threaded membermechanicalli connected' 'to and driven from-some part of said powermechanism in a direction determined'by. the direction of travel of thefear, meansconnected with 'thekcon'tro'ller mechaed member to be movedthereby, and electrocon'nected' means a nd threaded member;

power mechanism ther'efo'r, -an operators shaft provide'diwi'th threads;and driven from the power mechanism in.a direc tiondeten mined by thedirection of travel of-the'ear; and a threaded half nut connected to thecon- 'troller and movable longz'itucflinallv f of;v the said half nutinto engagement-with said to be operated by said shaft;

let. The combination of an elevator car; power mechanism there-ton, anoperators controller. a threaded memberlocatcd inthe carriage forengaging the threaded member. and 'atoggle for moving thehalf 'nut intoengagement with the threaded member be mored therebyv 15. Thecombination of an elevator car, power mechanism therefor. anper-atonecontroller. a threaded member lot'ated inthe vicinit v of the'powermechanism and driven. therefrom. a carriage connected to thej'controllerand movable longitudinally of" the threaded member. a half nut movablymounted on 'the carriage for engaging the thehalf 'nut into en agementwith the threaded member for cails'ingthe carriage and controller to-be-.moved thereby, 1 16'.'The combination of 'an"elevator car power Ymechanism. "therefor --a -n operatdrs said power inechanisnn-acarriagefoonnected to the controller and movable longitudinally ofthethreaded member. a halfz nut-jnoilablj' mounted on the carriageand-.hav'ingthrads for engaging the threaded. member; a pivoted at one:end to'the carriage-and the other end to the nut, and electromagnetic ofsaid cliit ch members for moving; the confor sea-id car and. a doorateach landing, a

nism and cooperatively related to the thread- .magnetic means controlledthroughjsaid c'ir cult, and operated when a. door is openednforcau'sing'the engagement of said controller 13. The. combination of an,elevator car -controller. .a c'lu tch comprising a rotatable threadedmember. and a toggle. for moving threaded member for causingtli'econtroller.

vicinity of the power mechanism and driven therefrom. a, carriageconnected to' the con troller and" movable longitudinally of thethreaded meinl'icr. a half nut mounted onthe.

threaded member," anda' togglefor moving.

controller, at-hreaded memberdriven from agle at.

means atorthrowing the toggletogengage 'POWr mechanism. for movingthelcar, an opa too for causing the carriage and controller to movedthereby.

said half nut with the threaded member for calls ingthe carriage andcontroller to be 17. The combination of an elevator car, means fordriving the same, an operators 1 controller, a frame inountedin thevicinity 'i engagement with the threaded member for causingtliecarriageand controller to be I moved thereby.

'18, The combination of an elevator car,

power mechanism therefor, a landing and a doorat said landing having anelectromagnetically controlled latch and a circuit controlling the same,an operat-ors controller, a frame mounted in the vicinity of said powermechanism, athreaded shaft mounted J onsaid frame and driven from saidpower Mechanism, a carriage connected to the. con- Weller and alsomounted on said frame and movable longitudinally of said shaft, a

$9 threaded half nut movably mounted on sail carrlagmmeans mounteduponsaid carriage "for moving the half nut into engagement the threadedmember for causing the carriage: and controller to be operated thereby,and contacts in said circuit .con-

ii -tilled the carriage to close said circuit when the controller is. inits neutral or off @osition.

landing, a door [at said landing and a latch for said door,electromagnetic means for operating said latch, a source of energy fortwo subscribing '19. The. combination of an elevator car, a v

said means, and a circuit for energizing said means comprising a contactin'the path of travel of the-car, a contact movable with the car forengaging said'first contact and a connection from said source to thecontact .on the car. I 20. The combination of an elevator car, alanding, a door at said landing and a latch for said door,electromagnetic means at the'landing for operating said latch, a sourceof energy for said electro-magnetic means, a contact at the-landing inthe path of travel ofthe car connected with Said means, a contact on thecar for engaging said first contact, and connections between said sourceand the contact on the car..

"21. The combination of an elevator car, power mechanism therefor,anoperators controller,'means driven from said power mechanism andconnected to the controller to move the same, a landing anda door atsaid landing, a latch for said door. electromagnetic means for operatingsaid latch, a source of energy for said electrormagnetic means, and acircuit for controlling said means including a stationary contact, acontact on the carfor engaging the same, a connection from the source tothe contact: on the'car, and a'contact in said connection closed by saidcontroller-connected means cuit to unlatch the door until the controlleris in its off position.

In'testimony whereof, I have signed my name to this specification, inthe presence of witnesses.

HENRY G. HILLMAX.

\Vitnesses: JOHN T. CLARKE, SAMUEL M. Vane, Jr.

for preventing theenergi'zation of the cir

